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After two years of sitting with gas in it I'd be very surprised if it started.
Gas we use today just can't hold that long.
If the tank was nearly empty and you filled it with premium you might get away with this.
Try replacing the spark plugs and squirt a little fresh gas in the spark plug holes when you replace them.That should get it to fire and sometimes is enough to create enough suction and pressure to suck out all the gummy nasty gas that's inside your carbs.You can try that a couple times and hope it works.
But most likely you're looking at rebuilding the carbs.Give that a shot and let me know if you need anything!
You can pull the spark plugs out of the head and plug them into the spark plug leads and then crank it over while watching the end of the plugs to see if there's spark.
Sometimes it's weak but will get better with new plugs.If you haven't tried new plugs do that. Old gas will foul them out because past 6 months it's not flamable inside an engine